class Student:
    sno = 20220405402001

    def __init__(self, name, age, gender, address):
        self.sno += 1
        Student.sno+=1
        self.name = name
        self.age = int(age)
        self.gender = gender
        self.address = address

    def __repr__(self):
        return (f'\n[学生]:\t学号:{self.sno}\t姓名:{self.name}\t'
                f'年龄:{self.age}\t性别:{self.gender}\t'
                f'住址:{self.address}\n')
